JPS583460B2 - Grooved pin manufacturing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION According to the present invention, grooves having protrusions extending in the axial direction are carved on both sides of a material cut to an appropriate size from a wire rod, and a grooved pin shown in FIGS. 5 and 6 is formed. The present invention relates to a grooved pin manufacturing device.

Conventionally, there are various types of equipment for manufacturing this type of grooved pin, but they have many problems in terms of the shape of the protrusion formed on the pin, the shape of the equipment for manufacturing this pin, and the cost of the equipment. There is.

The present invention was devised to solve the above-mentioned problems, and is characterized in that a groove is formed by pressing a grooving tool toward the axis of a material cut to an appropriate size from a wire rod.

Examples will be described below with reference to the drawings.

In FIGS. 1 and 2, reference numeral 1 denotes a base of a slotted pin manufacturing apparatus, and an exclusion hole 2 is bored in the center of the base for removing a material to be described later.

A guide block 3 is fixed to the base 1, and a rotary block 9 is fitted onto the guide block 3 so as to be rotatable and reciprocating.

A power transmission device 18 is attached to the outside of the rotary block 9, and applies rotational reciprocating motion to the rotary block 9 from the outside.

Three plate cams 10 are mounted at equal intervals inside the rotary hook 9, and the distance between the plate cams 10 and the center of the guide block 3 is adjustable.

Further, the plate cam 10 has a cam surface that pushes a guide roller 8, which will be described later, toward the center when the rotating block 9 rotates clockwise.

On the other hand, the guide block 3 is provided with three guide grooves 4 radially spaced at equal intervals.

A slide block 5 is slidably guided in each guide groove 4 so as to perform linear reciprocating motion toward the center of the guide block 3, and a grooving tool 6 is installed at one end of the slide block 5 and a guide roller 8 is installed at the other end. is installed.

The tip of this grooving tool 6 is formed into an appropriate size and shape for carving a groove in the material.

Further, a spring 12 is engaged with a stop pin 11 implanted in the slide block 5 so that the guide roller 8 is always in contact with the plate cam 10, and the slide block 5 is moved outward from the center of the guide block 3. Being pressed.

The stop pin 11 passes through an elongated hole 14 formed in a guide plate 13 that covers the rotation block 9 from the front side and is fixed to the guide block 3.

A material guide 15 is attached to the center of the guide plate 13, and a guide hole 16 is bored in the center.

This guide hole 16 guides a material 7 cut to an appropriate size from a wire rod.

Further, three fingers 17 for holding the material 7 are protruded around the guide hole 16, and the material 7 is stably held by the fingers 17.

Next, the operation of the present invention will be explained.

In the above-mentioned grooved pin manufacturing apparatus, the material 7 is the material guide 1.
5 and held by fingers 17.

On the other hand, when the rotating block 9 rotates a predetermined rotation angle clockwise along the guide block 3, the plate cam 10 also rotates clockwise.

Since the guide roller 8 rolls along the cam surface, the slide block 5 slides along the guide groove 4 toward the center of the guide block 3.

Therefore, the grooving tool 6 also moves toward the center and bites into the circumferential surface of the material 7 from three directions.

For this purpose, an axial groove is carved in the material 7, and the thickness corresponding to the groove portion is distributed on both sides of the groove, forming a protrusion of sufficient height.

When the rotary block 9 rotates counterclockwise after the groove is carved, the slide block 5 returns to its original position due to the reaction force of the spring 12.

As shown in FIG. 7, the grooving tool 6 is a roller provided with a grooving groove on the circumference, and after pressing the material 7 with this roller, the material is extruded by some means, By removing the material through the removal hole 2, the same type of groove can be formed even in a material with a large axial length.

As explained above, since the present invention is configured to push the grooving tool from the outer periphery of the material toward the center, stable grooves and protrusions can be formed, and grooved pins of stable quality can be produced. can be provided.

In addition, the shape of the device may be constant regardless of the size of the material,
It is compact and has a simple configuration, and its cost can be reduced.

[Brief explanation of drawings]

Figure 1 is a cross-sectional front view of the main part of the present invention, and Figure 2 is A of Figure 1.
3 is an explanatory diagram showing the operating state of the present invention, FIG. 4 is an overall perspective view of the material guide according to the present invention, and FIG. 5 is a sectional view of the main part along line A. Overall perspective view of the pin,
FIG. 6 is a sectional view taken along line BB in FIG. 5, and FIG. 7 is an overall perspective view showing another embodiment of the grooving tool according to the present invention. 1 is a base, 3 is a guide block, 4 is a guide groove, 5 is a slide block, 6 is a grooving tool, 8 is a guide roller,
9 is a rotating block, and 10 is a plate cam.

Claims (1)

[Scope of Claims] 1. A guide block 3 is fixed to a base 1, a rotary block 9 is fitted to the guide block 3 so as to be rotatable and reciprocated, and a plate cam 10 is installed inside the rotary block 9, while the guide block 3, guide grooves 4 are bored radially at equal intervals, a slide block 5 is slidably guided in the guide groove 4, a grooving tool 6 is installed at one end of the slide block 5, and a guide roller is installed at the other end. 8 is attached, the guide roller 8 is pressed so as to be in constant contact with the plate cam 10, and the slide block 5 is linearly reciprocated toward the center of the guide block 3 by the rotational reciprocating movement of the rotary block 9. Pin manufacturing equipment. 2. The grooved pin manufacturing apparatus according to claim 1, wherein the grooving tool 6 is a rotatably supported roller and has a grooving blade on its circumference.